2016
DOI: 10.1021/acs.iecr.5b04531
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Adsorbent Screening for Postcombustion CO2 Capture: A Method Relating Equilibrium Isotherm Characteristics to an Optimum Vacuum Swing Adsorption Process Performance

Abstract: Criteria/correlations proposed in the literature to predict the performance of an adsorbent in a separation process fail in three ways for carbon dioxide (CO 2 ) capture and concentration (CCC) from flue gas: (i) they cannot confirm if the stringent purity−recovery requirements will be met, (ii) the indices rank the adsorbents for a fixed set of operating conditions and not for the best performance for each adsorbent while satisfying the purity−recovery constraints, and (iii) the performance indicator for whic… Show more

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Cited by 89 publications
(142 citation statements)
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“…We need to point out that this selectivity value is much higher than that of HKUST-1 (12.9) in this study and its literature reported value ($15). 71 Although it is still lower than the currently best MOF materials such as UiO-66(Zr)-(COOH) 2 (56, measured by coadsorption experiments), 72 SIFSIX-2-Cu-i (72, Supporting Information Table S6), 25 and zeolite materials (>100, values vary across literatures), 73 the high chemical stability and CO 2 uptake capacity make opt-UiO-66(Zr)-(OH) 2 one of the best MOF adsorbents for postcombustion CO 2 capture reported so far.…”
Section: Binary Equilibrium Data From Dynamic Breakthrough Experimentmentioning
confidence: 99%
“…We need to point out that this selectivity value is much higher than that of HKUST-1 (12.9) in this study and its literature reported value ($15). 71 Although it is still lower than the currently best MOF materials such as UiO-66(Zr)-(COOH) 2 (56, measured by coadsorption experiments), 72 SIFSIX-2-Cu-i (72, Supporting Information Table S6), 25 and zeolite materials (>100, values vary across literatures), 73 the high chemical stability and CO 2 uptake capacity make opt-UiO-66(Zr)-(OH) 2 one of the best MOF adsorbents for postcombustion CO 2 capture reported so far.…”
Section: Binary Equilibrium Data From Dynamic Breakthrough Experimentmentioning
confidence: 99%
“…[15] One benefit of this approach is that it can be directly used in current power plants by retrofitting. [16] It has been well developed for more than 50 years, and many power plants have already implemented it to capture CO 2 with the potential of large-scale installation capability. The capture system can be installed and deployed in both coal-fired power plants and natural-gas power plants.…”
Section: Carbon Capture Processesmentioning
confidence: 99%
“…Figure 16b shows a simplest practical layout for a VSA process using a pressure between atmospheric pressure and vacuum. [16] The operation procedures are similar to what has been described in Figure 12b. However, the purge step is very important for efficient operation in engineering practice because the use of a purified component flowing in the reverse direction pushes the strongly adsorbed species (i.e., CO 2 ) backward the bed inlet for subsequent adsorption step.…”
Section: Rapid Pressure Swing Adsorptionmentioning
confidence: 99%
“…In many previous works, blowdown and evacuation steps have been conducted by specifying exponential pressure profiles as boundary conditions at the exit of the column. The duration of the blowdown and evacuation steps were chosen as decision variables and the exponential factor was chosen in such a way that the desired pressure levels were reached in the column well within the durations of these steps.…”
Section: Capture Unit Designmentioning
confidence: 99%
“…With this background, the central aims of the current study are: Propose a VSA scale‐up design for continuous CO 2 capture from flue gas emitted by a 500 MW coal based power plant. Establish a rigorous costing model for PCC using the VSA process. Apply the costing model to evaluate the CO 2 capture cost for the four‐step VSA cycle with LPP (schematically shown in Figure a) and the six‐step cycle with dual reflux (schematically shown in Figure b) for 13X zeolite, widely used in the current literature, and UTSA‐16, a promising metal organic framework (MOF) shortlisted in our previous study Compare the COE using the VSA technology with the Shell Cansolv absorption technology …”
Section: Introductionmentioning
confidence: 99%